Barbecue thermometer



FIG. 1 is a front elevational view of a barbecue thermometer showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a front perspective view thereof.

The broken lines are shown for the purpose of illustrating portions of the barbecue thermometer and forms no part of the claimed design. 

CLAIM The ornamental design for a barbecue thermometer, as shown and described. 